# Stony Brook MathCamp 2021

## July 19-23

Each day from 9-5, there will be a session running for the classes, which will remain active when classes are not in session. Think of this as the "classroom" where the classes will take place, but also where you can talk to other students or instructors between/before/after classes. The link to the session is

Mathcamp 2021 classroom

If you like this MathCamp, you might be interested in the Della Pietra High School Applied Math Program, on several Saturdays in the Fall and Spring.

### Monday

zoom recording passcode= 6@5z7zU#
9:30-10:45 Lisa Marquand Cryptography I Here is some material for the class. Make a copy in a way that you can mark it up (printed or electronically).
11:15-12:30 Ben Wu Game Theory I Here are the notes from this class.
1:45- 3:00 Kimberly Janowski Excel I
3:30- 4:45 Daniela Galvez-Cepeda Vectors Here is an outline and an exercise.
Today we will have some KenKen puzzles. Here are several for you to try:
KenKen #1ab, KenKen #2ab, KenKen #3ab, KenKen #4ab, KenKen #5ab, KenKen #6ab, or you can play online.

### Tuesday

zoom recording passcode= X4A+3Qff
9:30-10:45 Dylan Galt Topology I Watch this Numberphile video with the mathematician Tadashi Tokeida. He explores interesting surfaces that can be constructed by cutting and gluing paper. These playful constructions are related to many fundamental ideas in the field of topology, which we will be discussing.
11:15-12:30 Jin-Cheng Guu Enumeration & Recursion I
1:45- 3:00 Shamuel Auyeung Complex Numbers
3:30- 4:45 Timothy Alland Dynamical Systems See this video from Veritasium about the logistic map, the Mandelbrot set, and chaos, and also see this zoom into the Mandelbrot set. Here are the notes from this session.
Today we have Suko.
Here are some for you to try: Suko #1, Suko #2, Suko #3, Suko #4, Suko #5, Suko #6, Suko #7, Suko #8, Suko #9, Suko #10 or you can play online.

### Wednesday

zoom recording passcode= +6SOg6K?
9:30-10:45 Lisa Marquand Cryptography II Here are the notes from this session.
11:15-12:30 Kimberly Janowski Excel II
1:45- 3:00 Tobias Shin Cardinality & Infinite Sets A story about Hilbert's Hotel Infinity. Also, see this Veritasium video.
3:30- 4:45 Ben Wu Game Theory II Here are the notes from this session.
Since you are all now crypto-experts, here are some Ciphers (also known as "crypto-quotes"):
Cipher #1, Cipher #2, Cipher #3, Cipher #4, Cipher #5, or you can generate one online.

### Thursday

zoom recording passcode= 894*VjUq
9:30-10:45 Dylan Galt Topology II
11:15-12:30 Jin-Cheng Guu Enumeration & Recursion II Here are the notes from this session.
12:30- 1:30 Emilio Del Valle SBU Admissions A visit by a Stony Brook admissions counselor
1:45- 3:00 Timothy Alland Introduction to Groups See the Wikipedia page about what a group is. Here are the notes from this session.
3:30- 4:45 Shamuel Auyeung The Pigeonhole Principle Here are the notes from this session.
Finally, we have Two Not Touch (aka "StarBattle").
TwoNotTouch #1+2, TwoNotTouch #3+4, TwoNotTouch #5+6, TwoNotTouch #7+8, TwoNotTouch #9+10, TwoNotTouch #11+12, or you can play online.

### Friday

zoom recording passcode= BezK%94
9:30-10:45 Lisa Marquand Cryptography III Here are the notes from this session.
11:15-12:30 Kimberly Janowski Excel III
As a parting gift, here are some Kakuro puzzles (aka Cross-sums):
Kakuro #1, Kakuro #2, Kakuro #3, Kakuro #4, Kakuro #5, Kakuro #6, Kakuro #7, Kakuro #8, or, of course, you can do them online.